The University of Toronto Students' Union (UTSU), officially named the Students' Administrative Council of the University of Toronto, Inc., serves as the elected representative body for full-time undergraduate students at the University of Toronto's St. George campus. It holds the distinction of being the second-largest student union in Canada and the third-largest in North America.

The Toronto Magnetic and Meteorological Observatory is a historical observatory located on the grounds of the University of Toronto, in Toronto, Ontario, Canada. The original building was constructed in 1840 as part of a worldwide research project run by Edward Sabine to determine the cause of fluctuations in magnetic declination. Measurements from the Toronto site demonstrated that sunspots were responsible for this effect on Earth's magnetic field. When this project concluded in 1853, the observatory was greatly expanded by the Canadian government and served as the country's primary meteorological station and official timekeeper for over fifty years. The observatory is considered the birthplace of Canadian astronomy.